Controls for multicompartment elevators

ABSTRACT

Controls for multicompartment elevator cars including, one, an arrangement operating while a car is parked and in response to the answering of a hall call for one direction of travel by one compartment to delay for at least a predetermined period the answering of a hall call for the other direction by the other compartment; two, an arrangement for preventing under certain circumstances the registration of certain car calls in each of the compartments of a car; three, an arrangement in which two separate hall call registration devices are provided at a predetermined intermediate landing for indicating desired travel in a particular direction from that landing, one for travel to odd landings in that direction and the other for travel to even landings; four, an arrangement for stopping some of a plurality of two compartment cars with their lower compartments for odd landing hall calls and the rest of the cars with their upper compartments for even landing hall calls; five, an arrangement for preventing both the registration of car calls for even landings in lower compartments stopped for odd landing hall calls and the registration of car calls for odd landings in upper compartments stopped for even landing hall calls; six, an arrangement for transferring selection at a dispatching floor from a selected car to another car in response to an indication that a passenger at that floor desires to travel to a landing which is not served by the compartment of the selected car adjacent the dispatching floor; and seven, an arrangement for transferring selection at a dispatching floor from a selected car to another car in response to the registration of a hall call at a predetermined landing which the selected car cannot answer.

United States Patent Frederick Henry Nowak New Fairiield, Conn.;

Henry Joseph Pasternak, Parlin, NJ. [2]] Appl. No. 30,408

[72] Inventors [22] Filed Apr. 21,1970

[45] Patented Dec. 7, 1971 [73] Assignee Otis Elevator Company New York,NY.

[54] CONTROLS FOR MULTICOMPARTMENT Primary Examiner-Benjamin DobeckAssistant Examiner-W. E. Duncanson, Jr. Attorneys-Joseph L. Sharon andRobert T. Mayer ABSTRACT: Controls for multicompartment elevator carsincluding, one, an arrangement operating while a car is parked and inresponse to the answering of a hall call for one direction of travel byone compartment to delay for at least a predetermined period theanswering of a hall call for the other direction by the othercompartment; two, an arrangement for preventing under certaincircumstances the registration of certain car calls in each of thecompartments of a car; three. an arrangement in which two separate hallcall registration devices are provided at a predetermined intermediatelanding for indicating desired travel in a particular direction fromthat landing, one for travel to odd landings in that direction and theother for travel to even landings; four. an arrangement for stoppingsome of a plurality of two compartment cars with their lowercompartments for odd landing hall calls and the rest of the cars withtheir upper compartments for even landing hall calls; five, anarrangement for preventing both the registration of car calls for evenlandings in lower compartments stopped for odd landing hall calls andthe registration of our calls for odd landings in upper compartmentsstopped for even landing hall calls; six, an arrangement fortransferring selection at a dispatching floor from a selected car toanother car in response to an indication that a passenger at that floordesires to travel to a landing which is not served by the compartment ofthe selected car adjacent the dispatching floor; and seven, anarrangement for transferring selection at a dispatching floor from aselected car to another car in response to the registration of a hallcall at a predetermined landing which the selected car cannot answer.

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CONTROLS FOR MULTICOMPARTMENT ELEVATORS This invention relates toelevator control systems for cars having multiple passengercompartments. More particularly, it pertains to improvements in-elevatorcontrol systems for cars having two compartments.

In a suitable installation, a double compartment elevator car can servetwo landings simultaneously. Thus it operates more efficiently than asingle compartment car would in the same installation because it cananswer the same number of calls in less time with less stops.

One known arrangement for multicompartment cars operates a group of suchcars under the control of a well known groups supervisory system inwhich the cars travel in what is known as round trips. Each car startseach trip from the bottom tenninal, travels up either to the topterminal or to a landing below that terminal for which a call isregistered, usually the highest call, and then returns to the bottomterminal. During light traffic periods all cars park at the bottomterminal waiting to be dispatched as needed.

Recently it has become more desirable to operate groups of elevator carsin systems which segregate the landings served by the cars into zones oflandings. During light trafi'ic periods the cars of these systems areparked in the zones in a distributed fashion throughout the hoistway. lnsystems of this type with single compartment elevator cars, theanswering of up and down hall calls registered at the landings isstraightforward. A hall call is registered either at the landing atwhich a car is located or above or below that landing.

The answering of an up or a down hall call registered at the landing atwhich a single compartment car is located is accompanied by the openingof the car's doors in response thereto. This is accomplished byproviding either an arrangement in which the hall call establishes theappropriate direction of travel for the car before the doors are openedor an arrangement in which the car call registered by the passenger uponentering the car establishes the appropriate direction of travel. Inneither arrangement is there anything more than a remote chance of apassenger unknowingly boarding the car and being taken in a directionopposite to that in which he desires to travel; even in those situationsin which he is one of two passengers who both register calls at the samelanding for opposite directions of travel. In one arrangement, thatwhich establishes direction before the doors are opened, one of thesetwo calls is not cancelled and the system indicates which passenger haspreference in using the car. In the other arrangement both calls mightbe cancelled but the passengers themselves can decide who should havepreference. I

In those situations in which a hall call is registered either above orbelow the location of a single compartment car, at a landing to whichthe car is temporarily precluded from answering hall calls, no responseensues by that particular car. If on the other hand the car can answerthe call, response is had by l), determining the location of the landingat which the call is registered with respect to the location of the car,(2), establishing the proper direction of travel for the car inaccordance with these respective locations, and (3), causing the car tostart in the established direction.

Where a double compartment passenger elevator car is employed in asuitable installation having a control system in which the car canremain at rest at a position intermediate the terminal landings, itmeans that the car can park with its upper compartment located adjacentone landing and with its lower compartment located adjacent the nextlower landing. In these circumstances, it is desirable to have thesystem arranged so that the answering of a hall call for one directionof travel registered at the landing adjacent one compartment delays theanswering of a hall call for the other direction of travel registered atthe landing adjacent the other compartment for at least a predeterminedperiod of time. Otherwise, one compartment could answer a hall callregistered by an intending passenger desiring to travel in one directionwhile the other compartment was answering a hall call registered byanother intending passenger desiring to travel in the oppositedirection.

In such a situation, one of the passengers upon boarding his compartmentwould be taken in a direction opposite to that in which he desires totravel.

It is an object of this invention to provide elevator control systemshaving multicompartment cars, which park their cars at intermediatelandings, with an arrangement which in response to the answering of ahall call for one direction of travel registered at the landing adjacentone compartment delays the answering of a hall call for the otherdirection of travel registered at the landing adjacent the othercompartment for at least a predetermined period of time.

In referring to the answering of a hall call herein is meant thoseoperations which a car undergoes in order to provide service to theintending passenger who registered the call. In the disclosed embodimentthese include (i), causing the car to travel to the landing at which thecall is registered and to stop with one of its compartments locatedadjacent thereto, if one of its compartments is' not already so located,(2), opening the doors of that compartment, (3), cancelling the call,and (4), lighting a hall lantern indicating the availability of the carto travel in the direction indicated by the call.

As will be described, control systems can be arranged so that some ofthe forgoing operations take place notwithstanding a call is not beinganswered. Thus, while one compartment is answering a call at aparticular landing it might be desirable to open the doors of bothcompartments. Even so, if a hall call is registered at the landingadjacent the other compartment for the direction opposite that of thehall call being answered, according to the invention, the answering ofthe opposite direction hall call is delayed for at least a predeterminedperiod of time. During this time, in the disclosed constructedembodiment, the unanswered hall call is not cancelled and does not causethe lighting of a hall lantern indicating the availability of the carfor travel in its direction. Should this time elapse without theregistration of a further call for the same direction of travel as theanswered call, the opposite direction hall call is then answered as aresult of which it is cancelled and the proper hall lantern is lighted.

The disclosed embodiment is arranged so that a car answers a hall callonly after it has a direction of travel established which corresponds tothat indicated by the call which is being answered. This insures theavailability of the car for travel in the direction indicated by thecall before the call is answered. Thus, some of the operations includedin answering a hall call such as cancelling the call and lighting theproper hall lantern cannot occur before the direction corresponding tothe call is established. Accordingly, the passenger is provided with anindication that his call is being answered only after the car isprepared to travel in the direction indicated by his call.

it is, therefore, another object of this invention to provide elevatorcontrol systems having multicompartment cars, which park their cars atintermediate landings, with an arrangement which enables a car to answera hall call only after it has a direction of travel established for thedirection indicated by the call.

It is also desirable in a system employing a double compartment car inwhich the car can park with its compartments located adjacentintermediate landings to have the system arranged so that theregistration of a hall call at a landing at which either one of thecompartments is located does not cause the car to travel to answer thatcall. On the contrary, the doors of the compartment located adjacent thelanding at which the call is the call should open in response to theregistration of the call. At the same time, of course, the car must beable to respond to calls at landings above its uppermost compartment andbelow its prepares compartment.

It is another object of this invention to provide elevator controlsystems having multicompartment cars, which park their cars atintermediate landings, with an arrangement which enables a parked car toremain at rest and answer any hall call registered at any landingadjacent which one of its compartments is located.

Another advantage of multicompartment elevator cars is that the servicethey provide from particular landings can be restricted. In elevatorsystems with double compartment cars, service from the first twolandings can be restricted such that passengers boarding the lowercompartment at the first, or lower lobby, landing can only register carcalls for landings arbitrarily identified as odd landings while thoseboarding the upper compartment at the second or upper lobby, landing canonly register car calls for the remaining landings identified as evenlandings. In some systems having double compartment cars a car can stopin answer to a hall call with either compartment located adjacent anintermediate landing. If restricted service is provided in this system,provision must be made to remove the restriction to permit an intendingpassenger at such an intermediate landing to register a car call for anylanding in either compartment. Passengers might thwart the intendedpurpose of the restricted service arrangement, however, if unrestrictedservice were permitted as soon as the car left the first two landings.To discourage misuse of the system, restricted service is retained inboth compartments until the car answers a hall call. In this waypassengers who board at either of the first two landings tend to complywith the restricted service operation. Failure to comply may result inbeing carried beyond the floors to which they desire to travel, sincethey have no guarantee that the car is going to answer a hall callbefore reaching those floors.

It is another object of this invention to provide elevator controlsystems having multicompartment cars with an arrangement which preventsthe registration of certain car calls in each of the compartments whilethe car is located with its compartments adjacent predeterminedlandings.

It is another object of this invention to provide elevator controlsystems having multicompartment cars with an arrangement which preventsthe registration of certain car calls in each of the compartments untilthe car answers a hall call.

Restricted service may also extended to an intermediate landing abovethe first two landings, not withstanding passengers enter one of thecompartments at this landing. To accomplish this, separate odd and evenlanding hall call registration devices are provided at this landing. Inthis way, intending passengers by registering whether they desire totravel to an odd or even landing cause a lower, or odd landing servingcompartment, or an upper, or even landing serving compartment,respectively, to stop in answer to the call adjacent the landing atwhich the call is registered. Signs may be employed at this landing toinstruct intending passengers which landings a compartment is serving sothat when the doors open they may be informed as to whether thecompartment will transport them to their desired destination or not.

It is, therefore, a feature of this invention to provide elevatorcontrol systems having multicompartment cars with even and odd landinghall call registration devices at a particular intermediate landing andto arrange the stopping means of the cars to stop them with given onesof their compartments adjacent that particular landing in response tothe registration of hall calls at that landing.

It is another feature of this invention to cause a first group of carsto stop with their lower compartments adjacent a particular landing inresponse to the registration of odd landing hall calls thereat and toprevent this first group from stopping with either compartment adjacentthat landing in response to the registration of even landing hall calls;and in addition to cause the remaining second group of cars to stop withtheir upper compartments adjacent that particular landing in response tothe registration of even landing hall calls and to prevent this secondgroup from stopping with either compartment adjacent that landing inresponse to the registration of odd landing hall calls.

It is yet another feature of this invention to prevent the registrationof odd landing car calls in the upper compartment of a car which stopsat a particular landing with its upper compartment in response to evenlanding hall calls while this car is so stopped and to prevent theregistration of even landing car calls in the lower compartment of a carwhich stops at that particular landing with its lower compartment inresponse to odd landing hall calls while it is so stopped.

The disclosed system attempts to keep two cars parked with theircompartments adjacent the upper and lower lobbies for serving intendingpassengers thereat. Moreover the system is arranged to attempt to keepat these lobbies one car whose lower compartment serves a particularintermediate landing to which restricted service is extended and one carwhose upper compartment serves this particular landing. In the disclosedsystem the third landing is the intermediate landing to which restrictedservice is extended and by parking cars at the lobbies in the foregoingmanner, a car which can serve the third landing is provided at bothlobbies for passengers who desire to travel from either lobby to thethird landing.

One of the cars at the lobbies is selected as the next to leave. As aresult provision is made for transferring selection in case the selectedcar is not capable of serving the third landing with that one of itscompartments which is adjacent the lobby level at which a passengerdesiring to travel to the third landing is located. In suchcircumstances the registration of a hall call at either of the lobbieswithout the subsequent registration of a car call in one of thecompartments of the selected car within a predetermined period causes aselection transfer operation to select the other car parked at thelobbies.

It is, therefore, another object of this invention to provide anelevator control system having multicompartment cars with an arrangementwhich parks two cars at the lobbies, one of which serves a particularintermediate landing with its lower compartment and the other of whichserves that particular landing with its upper compartment, which selectsone of the lobby cars as the next to leave and which is capable oftransferring selection from one car to another upon an indication that apassenger at one of the lobbies desires to travel to that particularintermediate landing and that the selected car does not serve thatlanding with that one of its compartments which is adjacent the landingat which the passenger is located.

With restricted service extended to a particular intermediate landingthrough the provision of odd and even landing hall call registrationdevices at that landing and service' provided to that landing by theselected car at the lobbies, which can only answer either an odd or aneven landing hall call, it is also desirable to transfer selection incase the selected car is not capable of answering a hall call registeredat that particular intermediate landing.

It is, therefore, yet another object of this invention to provide anelevator control system having multicompartment cars with an arrangementwhich includes odd and even landing hall call registration devices at aparticular intermediate landing, which parks two cars at the lobbies,one of which serves odd landing hall calls at that particular landingand the other of which serves even landing hall calls at that particularlanding, which selects one of the lobby cars as the next to leave andwhich is capable of transferring selection from one car to another uponthe registration at the particular intermediate landing of a hall callwhich the selected car is not capable of answering.

These and other objects, features and advantages of the presentinvention will be appreciated from the foregoing and the followingdescription and appended claims when considered in conjunction with thedrawing, in which,

FIGS. 1, 2, 3, 4, 6, 7 and 8 are a schematic wiring diagram in straightline form of a plurality of elevator control circuits;

FIG. 5 is a schematic wiring diagram of hall lantern circuits;

FIGS. 9 and 10 are schematic wiring diagrams of circuits of car callregistration devices and associated control equipment;

FIGS. 11 and 14 are schematic wiring diagrams of circuits of hall callregistration devices and associated control equipment;

FIGS. 12, l3, l5 and 16 are schematic wiring diagrams of circuitsemployed in conjunction with the circuits of FIGS. 11 and 14;

1. In an elevator control system for a building having a plurality ofintermediate landings between two terminal landings; first hall callregistration means located at one of said landings for registering hallcalls indicating desired travel in a predetermined direction from saidlanding to a first group of landings; second hall call registrationmeans located at said one landing for registering hall calls indicatingdesired travel in said predetermined direction from said landing to asecond group of landings; a plurality of elevator cars each having aplurality of superimposed compartments for transporting passengers toand from said landings; and stopping means operating to stop said carswith given ones of said compartments adjacent said one landing inresponse to the registration of hall calls by said first and second hallcall registration means.
 2. In an elevator control system according toclaim 1, stop prevention means operating both to prevent said stoppingmeans from stopping a first one of said cars with a predetermined one ofits compartments adjacent said one landing in response to theregistration of a hall call by said first hall call registration meansand to prevent said stopping means from stopping a second one of saidcars with a predetermined one of its compartments adjacent said onelanding in response to the registration of a hall call by said secondhall call registration means.
 3. In an elevator control system accordingto claim 2, car call registration means for each of said cars located ineach of said compartments for registering car calls for travel to saidlandings; said stopping means operating to stop each of said cars with agiven one of its compartments adjacent a landing in response to theregistration Of a car call in said respective compartment for saidlanding; and car call registration prevention means operable to preventthe registration of car calls for said first group of landings in saidpredetermined one of said compartments in said first car when said caris stopped with said predetermined compartment located adjacent said onelanding.
 4. In an elevator control system according to claim 1, whereinsaid stopping means operates in response to the registration of hallcalls by said first hall call registration means to stop a first one ofsaid cars with a predetermined one of its compartments adjacent said onelanding and in response to the registration of hall calls by said secondhall call registration means to stop a second one of said cars with apredetermined one of its compartments adjacent said one landing.
 5. Inan elevator control system according to claim 4, car call registrationmeans for each of said cars located in each of said compartments forregistering car calls for travel to said landings; said stopping meansoperating to stop each of said cars with a given one of its compartmentsadjacent a landing in response to the registration of a car call in saidrespective compartment for said landing; and car call registrationprevention means operable both to prevent the registration of car callsfor said second group of landings in said predetermined one of saidcompartments in said first car when said car is stopped with saidpredetermined compartment located adjacent said one landing and toprevent the registration of car calls for said first group of landingsin said predetermined one of said compartments in said second car whensaid car is stopped with said predetermined compartment located adjacentsaid one landing.
 6. In an elevator control system for a building havinga plurality of landings including two terminal landings and a pluralityof intermediate landings identified as odd and even landings betweensaid two terminal landings; hall call registration means located at saidlandings including odd hall call registration means located at one ofsaid landings for registering hall calls indicating desired travel to anodd landing located in a predetermined direction from said one landingand even hall call registration means located at said one landing forregistering hall calls indicating desired travel to an even landinglocated in said predetermined direction from said one landing; aplurality of elevator cars operable to travel in two directions betweensaid landings, each car having an upper and a lower compartmentsuperimposed on one another for transporting passengers to and from saidlandings; and stopping means operating to stop each of said cars withone of its compartments adjacent said landings in response to theregistration of hall calls at said landings.
 7. In an elevator controlsystem according to claim 6, stop prevention means operating both toprevent said stopping means from stopping a first one of said cars atsaid one landing with its lower compartment adjacent said one landing inresponse to the registration of a hall call by said even hall callregistration means and to prevent said stopping means from stopping asecond one of said cars at said one landing with its upper compartmentadjacent said one landing in response to the registration of a hall callby said odd hall call registration means.
 8. In an elevator controlsystem according to claim 7, car call registration means located in boththe upper and lower compartments of each of said cars for registeringcar calls for travel to both even and odd landings; said stopping meansincluding individual stopping apparatus for each of said cars, eachoperating to stop its respective car with a given one of itscompartments adjacent a landing in response to the registration of a carcall in said given compartment for said landing; and car callregistration prevention means operable to prevent the registration ofcar calls for even landings in the lower compartmenT of said first carwhen said car is stopped with its lower compartment located adjacentsaid one landing.
 9. In an elevator control system according to claim 8,wherein said car call registration prevention means is inoperable toprevent the registration of car calls for even landings in the lowercompartment of said first car after said first car stops with its lowercompartment adjacent a landing displaced from said one landing in saidpredetermined direction.
 10. In an elevator control system according toclaim 6, wherein said stopping means operates in response to theregistration of hall calls by said even hall call registration means tostop a first one of said cars with its upper compartment adjacent saidone landing and in response to the registration of hall calls by saidodd hall call registration means to stop a second one of said cars withits lower compartment adjacent said one landing.
 11. In an elevatorcontrol system according to claim 10, car call registration meanslocated in both the upper and lower compartments of each of said carsfor registering car calls for travel to both even and odd landings; saidstopping means including individual stopping apparatus for each of saidcars, each operating to stop its respective car with a given one of itscompartments adjacent a landing in response to the registration of a carcall in said given compartment for said landing; and car callregistration prevention means operable both to prevent the registrationof car calls for odd landings in the upper compartment of said first carwhen said car is stopped with its upper compartment located adjacentsaid one landing and to prevent the registration of car calls for evenlandings in the lower compartment of said second car when said car isstopped with its lower compartment located adjacent said one landing.12. In an elevator control system according to claim 11, wherein saidcar call registration prevention means is inoperable to prevent theregistration of car calls for odd landings in the upper compartment ofsaid first car after said first car stops with its upper compartmentlocated adjacent a landing displaced from said one landing in saidpredetermined direction and to prevent the registration of car calls foreven landings in the lower compartment of said second car after saidsecond car stops with its lower compartment adjacent a landing displacedfrom said one landing in said predetermined direction.
 13. In anelevator control system according to claim 6, wherein said stoppingmeans includes individual stopping apparatus for each of said cars; stopprevention means for each of said cars, certain of said stop preventionmeans operating to prevent the stopping apparatus associated with theirrespective cars from stopping said cars with their lower compartmentsadjacent said one landing in response to the registration of a hall callby said even hall call registration means, the remainder of said stopprevention means operating to prevent the stopping apparatus associatedwith their respective cars from stopping said remaining cars with theirupper compartments adjacent said one landing in response to theregistration of a hall call by said odd hall call registration means.14. In an elevator control system according to claim 13, car callregistration means located in both the upper and lower compartments ofeach of said cars for registering car calls for travel to both even andodd landings; said stopping apparatus for each of said cars operating tostop its respective car with a given one of its compartments adjacent alanding in response to the registration of a car call in said givencompartment for said landing; and car call registration prevention meansoperable both to prevent the registration of car calls for odd landingsin the upper compartment of each individual car which is prevented fromstopping with its upper compartment adjacent said one landing inresponse to the registration of a hall call by said odd hall callregistration means at least until said respective car stops whiletraveling in said predetermined direction with its upper compartmentadjacent a landing removed from said one landing in said predetermineddirection and to prevent the registration of car calls for even landingsin the lower compartment of each individual car which is prevented fromstopping with its lower compartment adjacent said one landing inresponse to the registration of a hall call by said even hall callregistration means at least until said respective car stops whiletraveling in said predetermined direction with its lower compartmentadjacent a landing removed from said one landing in said predetermineddirection.
 15. In an elevator control system according to claim 6,wherein said stopping means includes individual stopping apparatus foreach of said cars; the stopping apparatus associated with certain ofsaid cars operating in response to the registration of hall calls bysaid even hall call registration means to stop their respective carswith their upper compartments adjacent said one landing and the stoppingapparatus associated with the remainder of said cars operating inresponse to the registration of hall calls by said odd hall callregistration means to stop their respective cars with their lowercompartments adjacent said one landing.
 16. In an elevator controlsystem according to claim 15, car call registration means in both theupper and lower compartments of each of said cars for registering carcalls for travel to both even and odd landings; said stopping apparatusfor each of said cars operating to stop its respective car with a givenone of its compartments adjacent a landing in response to theregistration of a car call for said landing in said compartment; and carcall registration prevention means operable both to prevent theregistration of car calls for odd landings in the upper compartment ofeach individual car which stops at said one landing in response to theregistration of a hall call by said even hall call registration means atleast until said respective car stops while traveling in saidpredetermined direction with its upper compartment adjacent a landingremoved from said one landing in said predetermined direction and toprevent the registration of car calls for even landings in the lowercompartment of each individual car which stops at said one landing inresponse to the registration of a hall call by said odd hall callregistration means at least until said respective car stops whiletraveling in said predetermined direction with its lower compartmentadjacent a landing removed from said one landing in said predetermineddirection.
 17. In an elevator control system according to claim 15, stopprevention means for each car, the stop prevention means associated withsaid certain of said cars operating to prevent the stopping apparatusassociated with their respective cars from stopping said cars with theirlower compartments adjacent said one landing in response to theregistration of a hall call by said even hall call registration meansand the stop prevention means associated with the remainder of said carsoperating to prevent the stopping apparatus associated with theirrespective cars from stopping said cars with their upper compartmentsadjacent said one landing in response to the registration of a hall callby said odd hall call registration means.
 18. In an elevator controlsystem according to claim 17, car call registration means in both theupper and lower compartments of each of said cars for registering carcalls for travel to both even and odd landings; said stopping apparatusfor each of said cars operating to stop its respective car with a givenone of its compartments adjacent a landing in response to theregistration of a car call for said landing in said compartment; and carcall registration prevention means individual to each car, each operableboth to prevent the registration of car calls for odd landings in theupper compartment of its respective car at least until said car stopswhile traveling in said predetermined direction with its uppercompartment adjacent a landing removed from said one landing in saidpredetermined direction and to prevent the registration of car calls foreven landings in the lower compartment of its respective car at leastuntil said car stops while traveling in said predetermined directionwith its lower compartment adjacent a landing removed from said onelanding in said predetermined direction.
 19. In an elevator controlsystem according to claim 18, wherein said car call prevention means ofeach car is individual to each compartment, said upper compartment meansof each car being operable to prevent the registration of car calls forodd landings in the upper compartment of its respective car until saidcar stops while traveling in said predetermined direction with its uppercompartment adjacent a given landing removed from said one landing insaid predetermined direction in response to a hall call registered atsaid given landing and said lower compartment means of each car beingoperable to prevent the registration of car calls for even landings inthe lower compartment of its respective car until said car stops whiletraveling in said predetermined direction with its lower compartmentadjacent a given landing removed from said one landing in saidpredetermined direction in response to a hall call registered at saidgiven landing.
 20. In an elevator control system according to claim 19,wherein each of the stopping apparatus of said certain of said cars isinoperable to stop its respective car with either of its compartmentsadjacent said one landing in response to the registration of a hall callby said odd hall call registration means and each of the stoppingapparatus of the remainder of said cars is inoperable to stop itsrespective car with either of its compartments adjacent said one landingin response to the registration of a hall call by said even hall callregistration means.
 21. In an elevator control system for a buildinghaving an upper and a lower lobby landing adjacent each other and anupper terminal landing displaced from said upper lobby landing by aplurality of intermediate landings at least some of which are identifiedas odd and even landings; hall call registration means located at eachof said landings for registering hall calls indicating desired travelfrom said landings, said hall call registration means located at one ofsaid landings including odd landing up hall call registration means forregistering hall calls indicating desired travel from said one landingto higher odd landings and even landing up hall call registration meansfor registering hall calls indicating desired travel from said onelanding to higher even landings; a plurality of elevator cars, eachhaving two superimposed compartments one for serving primarily oddlandings above said one landing and the other for serving primarily evenlandings above said one landing, each said car being capable oftraveling up and down said building and providing service to saidlandings with its compartments; and call answering means individual toeach car, each answering registered hall calls with the compartments ofits associated car in response to the location of one of thecompartments of said car adjacent a landing at which a call isregistered, each call answering means of a first number of said carsanswering odd landing up hall calls with the odd landing servingcompartment of its associated car and each call answering means of asecond number of said cars answering even landing up hall calls with theeven landing serving compartment of its associated car.
 22. In anelevator control system according to claim 21, wherein each of saidfirst number of call answering means is inoperable to answer evenlanding up hall calls with either compartment of its associated car andeach of said second number of call answering means is inoperable toanswer odd landing up hall calls with either of the compartments of itsassociated car.
 23. In an elevator control system according to claim 22,car call registration means located in each of the compartments in eachof the cars for registering car calls for travel to both even and oddlandings; each said call answering means operating to answer a car callregistered in a given one of the compartments of its associated car inresponse to the location of said given compartment adjacent the landingfor which said car call is registered; and odd and even compartment carcall registration prevention means individual to each car, each said oddcompartment means being operable to prevent the registration of carcalls for even landings in the odd landing serving compartment of itsassociated car while the respective car is traveling up until it answersa hall call with its odd compartment at a landing above said one landingand each said even compartment means being operable to prevent theregistration of car calls for odd landings in the even landing servingcompartment of its associated car while the respective car is travelingup until it answers a hall call with its even compartment at a landingabove said one landing.
 24. In an elevator control system according toclaim 23, wherein said hall call registration means includes up hallcall registration means at each landing from which up travel is possiblein said system and down hall call registration means at each landingfrom which down travel is possible in said system; control meansoperating in the absence of registered calls which a particular one ofsaid cars can answer to enable said car to stop movement and to remainat rest with each of its compartments adjacent a different intermediatelanding at each of which an up and a down hall call registration meansis located; and call answering delaying means operating in response tothe answering by one of the compartments of said one car of a hall callfor one direction of travel registered at the landing adjacent said onecompartment and delayed for at least a predetermined period of time theanswering by the other compartment of said one car of a hall call forthe other direction of travel registered at the landing adjacent saidother compartment.
 25. In an elevator control system according to claim21, call answering prevention means individual to each car, each saidprevention means of said first number of cars operating to prevent thecall answering means of its associated car from answering odd landing uphall calls with its even landing serving compartment and each saidprevention means of said second number of cars operating to prevent thecall answering means of its associated car from answering even landingup hall calls with its odd landing serving compartment.
 26. In anelevator control system according to claim 25, car call registrationmeans located in each of the compartments in each of the cars forregistering car calls for travel to said landings including both evenand odd landings; each said call answering means operating to answer acar call registered in a given one of the compartments of its associatedcar in response to the location of said given compartment adjacent thelanding for which said car call is registered; odd and even compartmentcar call registration prevention means individual to each car, each saidodd compartment means being operable to prevent the registration of carcalls for even landings in the odd landing serving compartment of itsassociated car while the respective car is traveling up until it answersa hall call with its odd compartment at a landing above said one landingand each said even compartment means being operable to prevent theregistration of car calls for even landings in the even landing servingcompartment of its associated car while the respective car is travelingup until it answers a hall call with its even compartment at a landingabove said one landing.
 27. In an elevator control system according toclaim 26, wherein each of said first number of call answering means isinOperable to answer even landing up hall calls with either compartmentof its associated car and each of said second number of call answeringmeans is inoperable to answer odd landing up hall calls with either ofthe compartments of its associated car.
 28. In an elevator controlsystem for a building having a plurality of intermediate landingsbetween two terminal landings; up and down hall call registration meanslocated at said landings for indicating desired travel from saidlandings in each direction in which travel is possible in said systemfrom each landing; an elevator car having a plurality of superimposedcompartments, each for transporting passengers to and from saidlandings; hall call answering means operating to cause said car toanswer a hall call registered at a landing in response to the locationof a compartment adjacent said landing; control means operating in theabsence of registered calls to enable said car to stop movement and toremain at rest with each of its compartments adjacent a differentintermediate landing at each of which an up and a down hall callregistration means is located; and answering delaying means operating inresponse to the answering of a hall call for one direction of travelregistered at a landing adjacent one compartment and delaying for atleast a predetermined period of time the answering of a hall call forthe other direction of travel registered at a landing adjacent anothercompartment.
 29. In an elevator control system according to claim 28,wherein said hall call answering means includes call cancellation meanscancelling a hall call in response to the answering of said call andsaid answering delaying means operates to delay said call cancellationmeans from operating for at least said predetermined period of time tocancel said hall call for said other direction of travel registered atsaid landing adjacent said other compartment.
 30. In an elevator controlsystem according to claim 29, wherein a hoistway door is provided foreach landing and a compartment door is provided for each compartment,each compartment door cooperating with said hoistway doors forpermitting passengers to transfer to and from its associatedcompartment; door control means operating in response to the operationof said hall call answering means to open both the door of thecompartment located adjacent the landing at which said call isregistered and the hoistway door at that landing; and said answeringdelaying means operates to delay said door control means from operatingfor at least said predetermined period to open the hoistway door at thelanding adjacent said other compartment and the compartment door thereofunless a hall call is also registered at the latter landing for the samedirection of travel as said answered hall call.
 31. In an elevatorcontrol system according to claim 30, direction establishing meansestablishing a preferred direction of travel for said car in response tothe registration of a hall call, said direction establishing meansenabling said hall call answering means to answer a registered hall callonly if the direction of travel is established corresponding to thedesired direction indicated by said hall call.
 32. In an elevatorcontrol system for a building having a plurality of landings, eachhaving a hoistway door, up and down hall call registration means locatedat said landings for use by intending passengers in indicating desiredtravel from said landings in each direction in which travel is possiblein said system from each of said landings; an elevator car having anupper and a lower compartment, each adapted to carry passengers to andfrom said landings and each having a door cooperating with said hoistwaydoors for permitting passengers to transfer to and from it; car controlmeans causing said car to operate in response to registered calls and tostop operating and to remain at rest with each of its compartmentslocated adjacent a different intermediate landing provided no call isregistered to whIch it can respond; said car control means including carstarting means starting said car when so at rest to travel up inresponse to the registration of a hall call at a landing above thelocation of said upper compartment and to travel down in response to theregistration of a hall call at a landing below the location of saidlower compartment; call answering means operating when said car is so atrest to cause said car while it remains at rest to answer a hall callindicating a desire for travel in either direction registered at eitherlanding adjacent which one of said compartments is located; and doorcontrol means operating in response to the operation of said callanswering means to open both the hoistway door at said landing and thedoor of the compartment located adjacent said landing.
 33. In anelevator control system according to claim 32, wherein said car controlmeans includes direction establishing means operating to prevent saidcall answering means from operating in response to a registered calluntil a preferred direction of travel is established for said car in thedirection indicated by said call.
 34. In an elevator control system fora building having a plurality of landings at least some of which areidentified as even and odd landings; an elevator car having a pluralityof superimposed compartments; said car being capable of traveling up anddown said building and stopping with its compartments adjacent saidlandings to provide service thereto; hall call registration means ateach of said landings for operation by intending passengers inregistering calls for service from said landings; hall call answeringmeans answering a hall call registered at a landing in response to thelocation of a compartment adjacent said landing; car call registrationmeans for each of said compartments for operation by passengers inregistering calls for travel to said landings; car call registrationprevention means operable in response to each of said compartments beinglocated adjacent a landing for preventing the operation of certain ofsaid car call registration means in each of said compartments.
 35. In anelevator control system according to claim 34, wherein said elevator carhas an upper and a lower compartment, each of which includes car callregistration means for registering calls for both even and odd landingsand said car call registration prevention means is operable to preventthe registration of car calls for odd landings in one of saidcompartments and for even landings in the other of said compartments.36. In an elevator control system according to claim 35, wherein saidlandings include an upper and a lower lobby landing adjacent each otherand said car call registration prevention means is operable in responseto said upper and lower compartments being located adjacent said upperand lower lobby landings, respectively, and until said car travels inthe up direction and stops with one of its compartment adjacent alanding above the upper lobby landing.
 37. In an elevator control systemaccording to claim 36, wherein said car call registration preventionmeans includes separate means for the upper and the lower compartments,said upper compartment means being operable to prevent the operation ofpredetermined ones of said upper compartment car call registration meansuntil said car stops with its upper compartment located adjacent alanding above the upper lobby and answers a hall call registered at saidlanding above; and said lower compartment means being operable toprevent the operation of predetermined ones of said lower compartmentcar call registration means until said car stops with its lowercompartment located adjacent a landing above the upper lobby and answersa hall call registered at said landing above; both said upper and saidlower compartment means being rendered inoperable when said car isprepared for travel in the down direction notwithstanding either or bothcompartments did not answer a hall call or calls above said upper lobBy.38. In an elevator control system according to claim 20, selection meansoperating in response to one of said certain of said cars and one of theremainder of said cars both with one of their compartments locatedadjacent one of said terminal landings and selecting one of said cars asthe next to leave said terminal landing; and selection transfer meansoperable to transfer selection from said selected car to the other uponthe registration of a hall call at said one landing for which thestopping apparatus of the selected car is inoperable to stop itsrespective car.
 39. In an elevator control system according to claim 22,control means operating to cause one of said first number of cars andone of said second number of cars to park each with its compartmentslocated adjacent said upper and lower lobby landings; selection meansselecting one of the cars parked at said lobby landings as the next toleave; and selection transfer means releasing the selection of aselected car and causing the selection of the other car upon theregistration of the odd or the even landing up hall call which the callanswering means of the selected car is inoperable to answer.
 40. In anelevator control system according to claim 27, control means operatingto cause one of said first number of cars and one of said second numberof cars to park each with its compartments located adjacent said upperand lower lobby landings; selection means selecting one of the carsparked at said lobby landings as the next to leave; and selectiontransfer means releasing the selection of a selected car and causing theselection of the other car upon the registration of the odd or the evenlanding up hall call which the call answering means of the selected caris inoperable to answer.
 41. In an elevator control system according toclaim 2, selection means selecting said first or said second car as thenext to leave one of said terminal landings upon each having one of itscompartments located adjacent thereto; hall call registration means atsaid one terminal landing for registering hall calls indicating desiredtravel from said terminal landing toward said one landing; circuit meansoperating in response to the registration of a hall call at said oneterminal landing and indicating desired travel to said one landing; andselection transfer means operable to transfer selection from theselected car to the other of said first or second cars upon theoperation of said circuit means when the compartment of the selected carwhich is adjacent said terminal landing is prevented from stopping atsaid one landing.
 42. In an elevator control system according to claim2, selection means selecting said first or said second car as the nextto leave one of said terminal landings upon each having one of itscompartments adjacent thereto; hall call registration means forregistering hall calls indicating desired travel from said terminallanding toward said one landing; car call registration means in eachcompartment of each of said first and second cars for registering carcalls for travel to said intermediate landings; and selection transfermeans operable to transfer selection from the selected to the other ofsaid first or second cars upon the registration of a hall call at saidterminal landing and the absence of a registered car call in eithercompartment of said selected car for a predetermined period.
 43. In anelevator control system according to claim 17, selection means operatingin response to one of said certain of said cars and one of the remainderof said cars both with one of their compartments located adjacent one ofsaid terminal landings and selecting one of said cars as the next toleave said terminal landing; hall call registration means at said oneterminal landing for registering hall calls indicating desired travelfrom said terminal landing toward said one landing; circuit meansoperating in response to the registration of a hall call at said oneterminal landing and indicating desirEd travel to said one landing; andselection transfer means operable to transfer selection from theselected car to the other upon the operation of said circuit means whenthe compartment of the selected car which is adjacent said terminallanding is prevented from stopping at said one landing.
 44. In anelevator control system according to claim 17, selection means operatingin response to one of said certain of said cars and one of the remainderof said cars both with one of their compartments located adjacent one ofsaid terminal landings and selecting one of said cars as the next toleave said terminal landing; hall call registration means at said oneterminal landing for registering hall calls indicating desired travelfrom said terminal landing toward said one landing; call answering meansindividual to each car, each answering hall calls with the compartmentsof its associated car in response to the location of one of thecompartments of said car adjacent a landing at which a call isregistered; car call registration means located in each of thecompartments in each of the cars for registering car calls for travel tosaid landings; car call responsive means operating in the absence of theregistration of a car call in either compartment of said selected car toprevent the answering of a hall call at said terminal landing when thecompartment of the selected car located adjacent said terminal landingis prevented from stopping at said one landing; and selection transfermeans operating to transfer selection from the selected car to the otherin response to the continued registration of an unanswered hall call atsaid terminal landing for a predetermined period.
 45. In an elevatorcontrol system according to claim 26, control means operating to causeone of said first number of cars and one of said second number of carsto park each with its compartments located adjacent the upper and lowerlobby landings; selection means selecting one of the cars parked at thelobby landings as the next to leave; each said even compartment car callregistration prevention means of said first number of cars operating toprevent the registration of a car call for said one landing in itsrespective compartment while its associated car is parked; each said oddcompartment car call registration prevention means of said second numberof cars operating to prevent the registration of a car call for said onelanding in its respective compartment while its associated car isparked; car call responsive means operating in the absence of theregistration of a car call in either compartment of the selected car toprevent the answering of a hall call at a particular lobby landing whena car call for said one landing is prevented from being registered inthe compartment of the selected car located adjacent said particularlobby landing; and selection transfer means operating to transferselection from the selected car to the other in response to thecontinued registration of an unanswered hall call at said particularlobby landing for a predetermined period.
 46. In an elevator controlsystem for a building having a plurality of landings including a firstgroup of landings and a second group of landings; first hall callregistration means located at one of said landings for registering hallcalls indicating desired travel in a predetermined direction from saidlanding to one of said first group of landings; second hall callregistration means located at said one landing for registering hallcalls indicating desired travel in said predetermined direction fromsaid landing to one of said second group of landings; a plurality ofelevator cars each of which is capable of serving each of said landings;and stopping means operating to stop said cars selectively at said onelanding in response to the registration of hall calls by said first andsecond hall call registration means, whereby certain of said cars stopat said one landing in response to the registration of hall calls bysaid first hall call regiStration means and the rest of said cars stopat said one landing in response to the registration of hall calls bysaid second hall call registration means.
 47. In an elevator controlsystem according to claim 46, wherein said stopping means are incapableof stopping said certain of said cars in response to the registration ofhall calls by said second hall call registration means and said rest ofsaid cars in response to the registration of hall calls by said firsthall call registration means.
 48. In an elevator control systemaccording to claim 47, car call registration means located in each ofsaid cars for registering car calls for travel to said landings; saidstopping means operating to stop each of said cars at a landing inresponse to the registration of a car call in that car for that landing;and car call registration prevention means operable both to prevent theregistration of car calls for said second group of landings in each ofsaid certain of said cars when the respective car is stopped at said onelanding and to prevent the registration of car calls for said firstgroup of landings in each of said rest of said cars when the respectivecar is stopped at said one landing.
 49. In an elevator control systemaccording to claim 47, wherein each of said cars has an upper and alower compartment for transporting passengers to and from said landingsand said stopping means stops said certain of said cars with their uppercompartments adjacent said one landing in response to the registrationof hall calls by said first hall call registration means and stops saidrest of said cars with their lower compartments adjacent said onelanding in response to the registration of hall calls by said secondhall call registration means.
 50. In an elevator control systemaccording to claim 16, for a building having an upper and a lower lobbylanding adjacent each other and so separated as to enable the upper andthe lower compartments of each car, respectively, to serve said lobbylandings simultaneously, wherein said car call registration preventionmeans operates to prevent the registration of a car call for said onelanding both in the lower compartments of said certain cars while saidcompartments are adjacent said lower lobby and in the upper compartmentsof the remainder of said cars while said upper compartments are adjacentsaid upper lobby and including insufficient lobby car circuitry whichoperates to cause one of said certain cars to travel to the lobbies ifnone of said certain cars is located thereat and to cause one of saidremainder of said cars to travel to the lobbies if none of saidremainder of said cars is located thereat.
 51. In a control systemaccording to claim 50, excessive lobby car circuitry operating inresponse to the location at said lobbies of a number of said cars inexcess of one of said certain cars and one of said remainder of saidcars and causing the excess of said cars to leave said lobbies untilonly one of said certain cars and one of said remainder of said cars islocated thereat.